Suppose we want to develop software for an PLANNER. A user planner should record events, give alarm, and connect to an email. Consider all updates that can be done to and for an event. Events can give an alarm based on the user preference.

A. Identify the top-level functional requirement for the planner, and model it with a use case diagram.

B. Assume that 'set alarm' is one of your use cases. Complete its description (i.e. frame details).

C. Give detailed definition of one of the use case activities.